文献类型：期刊文献

英文题名：Effect of Modification with Phenol Formaldehyde Resin on the Mechanical Properties of Wood from Chinese Fir

作者：Huang, Yanhui[1] Fei, Benhua[1] Yu, Yan[1] Zhao, Rongjun[2]

第一作者：Huang, Yanhui

通信作者：Fei, BH[1]

机构：[1]Int Ctr Bamboo & Rattan, Beijing 100102, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2013

卷号：8

期号：1

起止页码：272-282

外文期刊名：BIORESOURCES

收录：;EI(收录号：20131616219869);Scopus(收录号：2-s2.0-84876143648);WOS:【SCI-EXPANDED(收录号:WOS:000314632300026)】；

基金：This work was financially supported by projects from the National Natural Science Key Foundation of China (Grant No. 30730076).

语种：英文

外文关键词：Phenol-formaldehyde resin; Mechanical properties; Cell wall; Modulus of elasticity; Hardness

摘要：Samples of Chinese fir were treated with either low-molecular-weight or commercial phenol-formaldehyde (PF) resins. The macro- and micromechanical properties of the treated and untreated samples were determined. The average longitudinal tensile modulus of elasticity (MOE) was 30.88% larger for the samples treated with the low-molecular-weight PF resin than it was for the untreated samples. The average MOE of the samples treated with the commercial PF resin was 29.84% less than that of the untreated samples. The micromechanical properties of the samples were investigated through nanoindentation studies. For the samples modified with low-molecular-weight PF resin, the values of average MOE and hardness were 32.94 and 32.93%, respectively, greater than those of the untreated samples. In contrast, the average MOE and hardness values were 11.99 and 18.14%, respectively, greater for the samples modified with commercial PF resin compared to the untreated samples. It could be inferred that the low-molecular-weight PF resin was able to diffuse into the nanopores in the S-2 layer of the tracheid cell wall of the Chinese fir, thereby improving its macromechanical properties. Modification with low-molecular-weight PF resin was an effective way to enhance the longitudinal macromechanical properties of wood from the Chinese fir.